One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,9)(6,14)(7,8)(10,15)(11,16)(12,13)(17,18)(19,25)(20,27)(21,29)(22,23)(24,31)(26,28)(30,32)(33,34,38,39)(35,40,46,41)(36,37,43,42)(44,45,47,48)(1,3,7,4)(2,5,8,9)(6,12,15,11)(10,16,14,13)(17,19,22,27)(18,20,23,25)(21,30,31,26)(24,32,29,28)(34,39)(37,42)(40,41)(45,48)(2,8)(3,4)(10,14)(11,12)(18,23)(20,25)(24,29)(28,32)(33,35,38,46)(34,40,39,41)(36,44,43,47)(37,45,42,48)(1,4,7,3)(2,9,8,5)(6,12,15,11)(10,16,14,13)(17,20,22,25)(18,19,23,27)(21,28,31,32)(24,26,29,30)(33,35)(34,41)(36,47)(37,45)(38,46)(39,40)(42,48)(43,44)(1,5,7,9)(2,4,8,3)(6,13,15,16)(10,12,14,11)(17,19)(18,20)(21,26)(22,27)(23,25)(24,28)(29,32)(30,31)(33,36,38,43)(34,42,39,37)(35,44,46,47)(40,48,41,45)(1,6,7,15)(2,10,8,14)(3,11,4,12)(5,13,9,16)(17,21)(18,24)(19,26)(20,28)(22,31)(23,29)(25,32)(27,30)(33,37,38,42)(34,43,39,36)(35,45,46,48)(40,47,41,44)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.